alibaba/tengine — pull request #380 by Lax (2014-01-09 08:24:50+00:00)
Title: Added image_filter_crop_offset

image_filter模块裁剪默认从左上角开始，增加一个配置项image_filter_crop_offset用于设置裁剪的对齐方式。

image_filter_crop_offset {left,center,right} {top,center,bottom};